Lower Miocene stratigraphy of the Gebel Shabrawet area, north Eastern desert Egypt

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16 Citations (Scopus)

Abstract

The Lower Miocene carbonate/siliciclastic sequence of the Shabrawet area, comprises a complex alternation of autochthonous and allogenic sediments. The sequence can be subdivided into two lithostratigraphic units. The lower unit (unit 1) is equivalent to the Gharra Formation. It is mainly clastic and composed of sandstones, siltstones and shales with minor limestone intercalations. These sediments are rich in Clypeaster spp., Scutella spp., Miogypsina intermedia, Operculina complanata, and smaller foraminifera. The upper unit (unit II) was considered by previous workers as being equivalent to the Marmarica Formation. It consists mainly of nonclastic rocks, dominated by sandy and chalky limestones rich in larger foraminifera (miogypsinids and nummulitids). This unit is topped by a highly fossiliferous (Heterostegina, Operculina and Planostegina) sandy limestone. The present study places both units in the Gharra Formation and reports for the first time M. intermedia from the Miocene sequence of the Shabrawet area.

Original languageEnglish
Pages (from-to)203-212
Number of pages10
JournalJournal of African Earth Sciences
Volume34
Issue number3-4
DOIs
Publication statusPublished - Apr 2002

Keywords

  • Desert
  • Egypt eastern
  • Miocene
  • Stratigraphy

ASJC Scopus subject areas

  • Geology
  • Earth-Surface Processes

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